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Income Taxes	3 Months Ended
	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense of $21,000 and $169,000 was recorded for the three months ended July 31, 2020 and 2019, respectively. The effective tax rates were (3.6)% and 25.4% for the three months ended July 31, 2020 and 2019, respectively. The change in the effective tax rate for the three-month period is primarily due to the impact of foreign operations which are taxed at different rates than the U.S. tax rate of 21%. In addition, the change in the U.S. effective tax rate for the three months ended July 31, 2020 was unfavorably impacted by the recording of a valuation allowance against the deferred tax asset which resulted in the elimination of any income tax benefit.

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- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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